Fun, H.-K.Chantrapromma, S.Kobkeatthawin, T.Padaki, M.Isloor, A.M.2020-03-312020-03-312010Acta Crystallographica Section E: Structure Reports Online, 2010, Vol.66, 7, pp.o1811-o181210.1107/S160053681002369Xhttps://idr.nitk.ac.in/handle/123456789/9528In the title nicotinonitrile derivative, C18H15N 3OS, the central pyridyl ring makes dihedral angles of 25.22 (10) and 24.80 (16) with the 4-aminophenyl and thiophene rings, respectively. The thiophene ring is disordered over two orientations by rotation around the C(thiophene)-C(pyridine) bond; the occupancies are 0.858 (2) and 0.142 (2). The ethoxy group is slightly twisted from the attached pyridyl ring [C-O-C-C torsion angle = 171.13 (16) ]. In the crystal structure, molecules are linked by N-H?N hydrogen bonds into chains along [010]. These chains are stacked along the a axis. C-H?? weak inter-actions involving the thiophene ring are observed.Article